<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    //模拟获取 用户数据 订单数据 商品数据
    function getUsers(){
      setTimeout(()=>{
        let data = '用户数据'
        iterator.next(data)
      },1000)
    }
    function getOrders(){
      setTimeout(()=>{
        let order = '订单数据'
        iterator.next(order)
      },1000)
    }
    function getGoods(){
      setTimeout(()=>{
        let goods = '商品数据'
        iterator.next(goods)
      },1000)
    }

    function * gen(){
      let users = yield getUsers()
      console.log(users)
      let orders = yield getOrders()
      console.log(orders)
      let goods = yield getGoods()
      console.log(goods)
    }
    let iterator = gen()
    iterator.next()
  </script>
</body>
</html>